Surface-gage.



J. STENLTZER'.

SURFACE'GAGE.

APPLICATION FILED JULY Il. 1916.

9251,43? Patented Dec. 25,1917.

JOHN STENITZER, OF ST. LOUIS, MSSOURI.

SURFACE-GAGE.

Specification of Letters Patent.

Fatented Dec. 25, 1917.

Application led July 11, 1916. Serial No. 1078,665.

To all lwhom t may concern:

Be it known that I, JOHN STENITZER, a citizen of the United States, residing at St. Louis, in the county of St. Louis City and State of Missouri, have invented new and useful Improvements in Surface-Gages, of which the following is a specification.

This invention relates to improvements in surface gages, and its objects are to provide a gage which admits of the ready and convenient adjustment of the needle, pointer or scriber to different working positions, which adapts the scriber to be circularly adjusted upon its pivotal axis without disturbing its position upon its supporting upright, and which also enables the scriber to be longitudinally adjusted in a practically instantaneous manner.

vWith these and other objects in View, the invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawing in which Figure l is a perspective view of a surface gage embodying my invention showing some of the different positions of adjustment of the scriber.

Fig. 2 is a plan view of the same.

Fig. 3 is a horizontal transverse section taken on the plane of the stylus supporting brackets.

Fig. 4 is a vertical section taken in the plane of said supporting pin or screw.

Fig. 5 is a vertical section taken at right angles to the plane of section shown in Fig. 3, on the line of the scriber regulating and clamping screw.

Figs. 6 and 7 are detail views of the main and auxiliary stylus carrying brackets.

In the practical embodiment of my invention, I provide a suitable base 1 carrying an upright 2 on which is slidably mounted a main supporting bracket 3 in the form of a split sleeve provided with a set screw 4 for fixing it in adjusted position upon the upright.

The jaws of this main supporting bracket are provided with alined circular openings 5, and formed in one of the jaws and intersecting the opening 5 thereof is a slot 6. The openings 5 are adapted to receive the threaded portion of a securing pin or bolt 7 which is provided with a lateral key or projection 8 to engage the slot 6 and hold the pin or bolt, when fully applied in position, against rotation.

The threaded end of the pin or bolt 7 carries a nut 9 which bears against the unslotted jaw of the bracket 3, and formed on the pin or bolt is an angular head 10 which bears against the slotted jaw of said bracket, whereby through the adjustment of the nut 9 the bracket jaws may be drawn together for coperation with the screw 4- to clamp the bracket 3 firmly in any position of adjustment on the upright 2.

' The angular head portion or enlargement 10 is preferably of square form in cross section, although it may be made in any `other suitable angular form, and this head 10 is disposed upon the pin or bolt 7 between the key or projection 8 and a circular terminal portion 11 of the bolt.

Mounted upon the portions 10 and 11 of the bolt are brackets 12 and 13 for adjustably supporting the needle, pointer or stylus 14E, which may be of ordinary form. The bracket member 12 has its body portion p rovided with a square socket 15 to fit the angular head 10, and formed with a semi-circular portion or projection 16 provided with a depending arm 17, while the bracket member 13 is formed with a cylindrical or circular body portion 18 (Fig. 7) to engage the portion 11 of the bolt and with a forwardly proiecting arm 19.

The brackets 12 and 13 are retained in position upon the bolt by a retaining screw 2O engaging a threaded opening 21 (Fig. 3) in the portion 11 of the bolt, by means of which the bracket member 13 is frictionally clamped from movement against the head 10, while the bracket member 12 is held from rotary movement on said head by reason 0f the angular form of the head and the socket 15 (Fig. 3). Hence the two brackets 12 and 13 are normally fixed against movement.

The arm 19 (Fig. 7) of the bracket 13 is provided with a vertical opening 22 for the passage of the scriber 14 which is adapted to be fixed thereto in adjusted position by a This nut is arranged to bind against the. front ofthe arm 19 so as to cause the stem 23 to draw the scriber in frictional clamping a venfgagement with the rfront Wall of the open.

ing 22, thus fixing the scriber against movement, but by relaxing the nut 25 the stem 23 will be loosened, thus bringing its notch into true alinement with the opening 22 and permitting sliding adjustment of the scriber in the 'direction of its length.

The semi-circular portion of the bracket 21 projects over upon the circular body portion 13 of the bracket 13 and is thus varranged to dispose the arm 17 of the bracket Q vat a point below and in rear of the arm 13o-t the bracket` The arm 17 is iformed with a passage '26 (Fig. 5) which on its .forward side intersects Va socket Vor countersinfk 27, fand through said passage and countersink is an adjusting and supporting screw bolt or stem 2S, provided at its rear end with an adjusting and retaining nut 29 and at its forward end with a perforated h'ead or eye 30 vfor the passage of the needle. The scriber 14 extends through the passage 22 in thel arm 19 'of the bracket 13 and seats against a .substantially L-shaped lguide 31, the vertical web of which is provided with an opening 32 for the passage of the bolt 28, and the horizontal web of which is provided with an opening 33 for the passage of the styl-us. A coiled spring 34 'encircles the bol-t v28 between the bracket arm 17 an'd the guide 31 and is seated in the socket 27, whereby the guide is normally pressed forward to cause the eye 30 to bring the stylus in binding engagement with the wall of the opening in the lower web of the guide, this engagement being of a yielding character, however, so as to permit ready adjustment of t-he stylus when the clamping screw 23 is relaxed, the engagement between the guide and the stylus serving simply to retain the stylus in position against any possibility of any accidental displacement while it is free for adjustment or prior to the fixing of the clamping screw to lock it after adjustment. By the adjustment of the nut 29 the tension of the spring may be varied and the binding action regulated and the stylus also adjusted so as to be stayed and supported while set in a iixed position parallel with the bracket arm 171 It will be observed from the foregoing description that the scriber and brackets may be adjusted as alwhole upon and about the upright 2 by sliding or turning movements of the main supporting bracket 3 upon said upright after relaxing the screw 4, and may then be Vfastened in position by adjusting said screw. It will also be seen that the scriber may be adjusted longitudinally in its supporting brackets, and that by removing the screw Q0 and sliding the brackets 12 and 13 outward until the square socket of the bracket 12 clears the square head 10 the said brackets 12 and 13 may be adjusted by dis- Uopiet o1 this' patent may be obtained for posing them at any ,angle about the supporting screw @T within a range of 360 degrees, and that by reapplying the brackets and screw the parts may be fixed in adjusted position. Also it will be seen that upon releasing 'or relaxing the nut 9 the screw 7 may be moved endwise to bring its locking key out of engagement with the slot 6, whereupon the scriber and parts associated therewith Vmay be readily land conveniently yremoved. It will be evident to those versed in: the art that the construction described aii'ords manifold conveniences in point of `tariety of adjustments and in effecting lthe automatic retention ot the stylus in position for adjustment when it is released by its fastening means to prevent its accidental displacement.

I claim y 1. A surface gage includingan upright, a main supporting bracket adjustable on the upright, a support rotatably adjustable upon the main supporting. bracket, brackets carried by s aid 'support and adjustable therewith, a needle extending through one ot said brackets, and means carried by the brackets for holding the needle in adjusted position.

Q. A surface gage including an upright, a main supporting bracket adjustable on the upright, a support rotatably adjustable upon the main supporting bracket, brackets carried by said support and adjustable therewith, one having a depending and the other a forwardly projectino' arm; a needle adjustably supported by tie arm of one o said last named brackets, a stem, and a spring encircling the stem for holding the needle in adjusted position, said stem being/supported by the arm of the other of said last named brackets.

3. A surface gage including an upright, a main supporting bracket adjustably mounted on Athe upright, a supporting member carried by said bracket, stylus carrying brackets carried by said supporting inember and rotatably adjustable thereon, one 'ot' said brackets having a forwardly projecting horizontal arm and the other a depending vertical arm, a stylus slidably `'adjustable in said horizontal arm, means for tixingv it thereto, a guide having vertical and horizontal portions, said horizontal portion having an opening for the passage of the stylus, a screw stem passing through the vertical arm and vertical portion of the guide and having an eye for the passage of said guide, a spring surrounding the stem between the guide and yvertical arm, and a clamping and retaining nut engaging said stem. v l

1n testimony whereof I ailix my signature.

JOHN sTEN'TzER.

m cem each, by Aaddressing are commissariat 'or raam, Washington, D. G. f 

